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https://issues.apache.org/jira/browse/SOLR-8081?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14904227#comment-14904227
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Noble Paul commented on SOLR-8081:
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deploying RAID is not what we are discussing. If you have a bunch of RAID disks 
how do you ensure that your Solr utilizes them properly 

> When creating a collection, we need a way to utilize multiple disks available 
> on a node.
> ----------------------------------------------------------------------------------------
>
>                 Key: SOLR-8081
>                 URL: https://issues.apache.org/jira/browse/SOLR-8081
>             Project: Solr
>          Issue Type: Improvement
>          Components: SolrCloud
>            Reporter: Timothy Potter
>
> Currently, if I want to change the dataDir for a core (such as to utilize 
> multiple disks on a Solr node), I need to either setup a symlink or change 
> the dataDir property in core.properties and restart the Solr node. For 
> instance, if I have a 4-node SolrCloud cluster and want to create a 
> collection with 4 shards with rf=2, then 8 Solr cores will be created across 
> the cluster, 2 per node. If I want to have each core use a separate disk, 
> then I have to do that after the fact. I'm aware that I could create the 
> collection with rf=1 and then use AddReplica to add additional replicas with 
> a different dataDir set, but that feels cumbersome as well.
> What would be nice is to have a way for me to specify available disks and 
> have Solr use that information when provisioning cores on the node. 
> [~anshumg] mentioned this might be best accomplished with a replica placement 
> strategy.



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